232131403 has 4 divisors (see below), whose sum is σ = 265293040. Its totient is φ = 198969768.

The previous prime is 232131391. The next prime is 232131437. The reversal of 232131403 is 304131232.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 232131403 - 2⁵ = 232131371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (232131703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16580808 + ... + 16580821.

It is an arithmetic number, because the mean of its divisors is an integer number (66323260).

Almost surely, 2^232131403 is an apocalyptic number.

232131403 is a deficient number, since it is larger than the sum of its proper divisors (33161637).

232131403 is an equidigital number, since it uses as much as digits as its factorization.

232131403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33161636.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 232131403 is about 15235.8591159147. The cubic root of 232131403 is about 614.5793523361.

Adding to 232131403 its reverse (304131232), we get a palindrome (536262635).

The spelling of 232131403 in words is "two hundred thirty-two million, one hundred thirty-one thousand, four hundred three".